氧化锌纳米纤维的制备、表征及电化学性能研究  

Preparation, characterization and electrochemical properties of ZnO nanofibers

作　　者：付家鹏[1] 罗磊[1] 陈克[1] 乔辉[1] 魏取福[1] 

机构地区：[1]江南大学生态纺织教育部重点实验室,江苏无锡214122

出　　处：《电源技术》2015年第4期749-752,共4页Chinese Journal of Power Sources

基　　金：国家自然科学基金(21201083);中央高校基本科研业务费专项资金资助(JUSRP11102)

摘　　要：通过静电纺丝法制备PAN/PVP/C4H6Zn O4复合纳米纤维,高温煅烧得到Zn O纳米纤维。分别通过X射线衍射(XRD)、扫描电子显微镜(SEM)、热重分析(TG)等手段对材料进行表征分析,并进一步研究其作为锂离子电池负极材料的电化学性能。SEM结果表明PAN/PVP/C4H6Zn O4复合纳米纤维直径大小约360 nm,煅烧后得到约150 nm的Zn O纳米纤维。电化学性能结果显示Zn O纳米纤维负极材料首次充放电比容量分别为767和1 208 m Ah/g,循环20周后比容量为342 m Ah/g,首周循环效率为63.5%。The PAN/PVP/C4H6ZnO4 composite nanofibers were prepared by electrospinning technique, then ZnO nanofibers were obtained by annealing at high temperature. The structure and morphology of the obtained materials were characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM） and thermogravimetric analysis （TG）. The electrochemical properties of ZnO nanofibers as anode materials for Li-ion batteries were also studied. The SEM results show that the average diameter of PAN/PVP/C4H6ZnO4 composite nanofibers and the size of ZnO nanofibers were about 360 and 150 nm, respectively. The results indicate that the first charge and discharge special capacities are 767 and 1 208 mAh/g, respectively. After 20 cycles, the reversible special capacity maintains at 342 mAh/g, and the initial cycle efficiency is 63.5%.

关 键 词：静电纺丝 纳米纤维 负极材料 电化学性能 

分 类 号：TM912.9[电气工程—电力电子与电力传动]